Weed Suppression by Release of Isothiocyanates from Turnip‐Rape Mulch

  title={Weed Suppression by Release of Isothiocyanates from Turnip‐Rape Mulch},
  author={Jan Petersen and Regina G. Belz and Frank Walker and Karl Hurle},
  journal={Agronomy Journal},
The allelopathic potential of isothiocyanates (ITC) released by turnip-rape mulch [Brassica rapa (Rapifera Group)-Brassica napus L.] was evaluated. Six different ITCs were identified from chopped turnip-rape by HPLC-DAD/HPLC-MS. All plant parts contained 2-phenylethyl-ITC. In the shoot n-butyl and 3-butenyl-ITC dominated. Younger leaves, flowers, and buds also contained small amounts of benzyl and allyl-ITC. Furthermore, marginal amounts of 4-pentenyl-ITC were detected. In the soil, where… 

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